1. Commercial Division Assignment Depends on the Claim and Its Value
The Commercial Division hears qualifying commercial disputes within the Supreme Court. Under 22 NYCRR § 202.70, assignment depends on the claim type, the amount or value involved, and specified exceptions. A dispute between two businesses does not automatically qualify.
The $100,000 Threshold and Covered Claims
The ordinary Suffolk County threshold is $100,000, excluding punitive damages, interest, costs, disbursements, and claimed attorney fees. For declaratory or equitable relief, the court measures the threshold by the value of the intended benefit, protected right, or avoided injury.
Eligible matters include commercial contracts, fiduciary duties, business torts, UCC transactions, and corporate governance. The amount demanded does not replace the subject-matter test. Broader complex commercial litigation analysis addresses the merits rather than specialized assignment rules.
Exceptions and Excluded Disputes
Shareholder derivative actions, commercial class actions, and business-entity dissolutions do not face the ordinary monetary threshold. An Article 75 arbitration application may also qualify for an exception when the agreement provides for arbitration outside the United States.
By contrast, professional-fee collection suits and commercial rent-only disputes are excluded regardless of value. Businesses should assess the principal claims and counterclaims rather than relying solely on the dollar amount.
2. State Venue and Federal Jurisdiction Require Separate Reviews
A court's authority over a claim, authority over a defendant, and proper venue are distinct issues. A local office or contractual preference does not establish all three. Review each requirement before choosing a state or federal forum.
County Venue under CPLR § 503
CPLR § 503 generally permits venue where a party resided at commencement or where substantial events underlying the claim occurred. For domestic or authorized foreign corporations, residence generally follows the principal office, not every business location.
A written venue agreement may control under CPLR § 501, subject to statutory limits. For an out-of-state defendant, personal jurisdiction may require separate analysis under CPLR § 302. Confirm corporate residence and relevant events before filing.
Federal Jurisdiction in the Eastern District
The Eastern District of New York includes Suffolk County; its Central Islip courthouse handles many disputes arising locally. Federal-question jurisdiction under 28 U.S.C. § 1331 requires a claim arising under federal law.
Diversity jurisdiction under § 1332 generally requires complete diversity and more than $75,000 in controversy, excluding interest and costs. Corporate citizenship depends on incorporation and principal place of business. Federal venue also must satisfy 28 U.S.C. § 1391. The court uses CM/ECF, not the state NYSCEF system.
3. Contract Terms May Redirect the Dispute before Filing
Review the signed contract, amendments, and incorporated terms before authorizing a lawsuit. Forum-selection, choice-of-law, arbitration, and notice clauses affect different decisions. None should be treated as interchangeable.
Forum-Selection and Arbitration Provisions
A forum-selection clause identifies a court or location; choice-of-law provisions identify governing law. Neither creates federal subject-matter jurisdiction or automatically secures Commercial Division assignment.
An arbitration clause may require private proceedings instead. The Federal Arbitration Act can apply to commerce-related agreements; CPLR Article 75 governs relevant state-court applications. Some contracts permit court requests for provisional relief. Commercial arbitration covers those procedures in greater depth.
Contract Notice and Limitation Periods
A contract may require written breach notice, time to cure, or negotiation. Review the prescribed delivery method and deadline; an informal email may not satisfy the agreement.
CPLR § 213(2) generally provides six years for ordinary contract claims. UCC § 2-725 generally gives sales-of-goods claims four years; an original agreement may shorten this to at least one year. Accrual and exceptions can alter the calculation. See the separate breach-of-contract analysis for claim elements and defenses.
4. Filing and Commercial Division Assignment Have Different Deadlines
Commencement, service, and assignment are separate steps. Commercial Division cases in Suffolk County Supreme Court require NYSCEF electronic filing, subject to applicable exemptions. The courthouse is at 1 Court Street in Riverhead.
Commencement and Service
Under CPLR § 304, a civil action generally begins by filing a summons and complaint or summons with notice. Electronic filing does not itself complete service on a defendant.
CPLR § 306-b generally requires service within 120 days of commencement, subject to exceptions and possible extensions. For proceedings with limitation periods of four months or less, service generally must occur no later than 15 days after the limitation period expires, except as otherwise provided. Record the filing date and service deadline separately.
The RJI and Commercial Division Addendum
Under 22 NYCRR § 202.70(d), parties generally must seek Commercial Division assignment within 90 days after service of the complaint. The filing requires a Request for Judicial Intervention (RJI) and Commercial Division Addendum certifying eligibility.
Rule § 202.70(e) allows limited transfer requests after assignment outside the Division. Another party may act within ten days of receiving a timely but incorrectly designated RJI, while a delayed request requires good cause. Transfer is not automatic.
5. Evidence Preservation and Agency Decisions Need Early Review
A viable forum does not resolve missing records or an improperly classified claim. Management should connect the requested relief to supporting evidence and distinguish private business disputes from challenges to governmental decisions.
Contracts, Communications, and Electronic Records
Preserve agreements, amendments, invoices, payment histories, correspondence, and relevant digital records. These materials help establish obligations, performance, and claimed losses.
When litigation is reasonably anticipated, evaluate preservation duties before routine deletion affects relevant information. The related civil litigation evidence page examines record preservation in more detail.
Challenges to Government Determinations
Permit, zoning, or agency challenges may require administrative review or proceedings under CPLR Article 78 rather than ordinary contract litigation. Local regulation matters only when it affects the underlying business activity or agency decision.
Under CPLR § 217(1), covered proceedings generally must begin within four months after a determination becomes final and binding, unless a shorter period applies. Confirm the issuing agency, finality date, and any required administrative steps. The special service rule under CPLR § 306-b may also apply.
6. A Pre-Filing Review Should Produce a Specific Decision
A useful internal assessment identifies the proposed forum, governing contract provisions, immediate deadlines, and documents supporting the requested relief. Under CPLR § 321(a), corporations generally must appear through an attorney, subject to limited statutory exceptions.
Four Questions before Filing
- Forum: Does the dispute belong in state court, federal court, or arbitration?
- Assignment: Does it meet the Commercial Division's claim and value requirements?
- Deadlines: When are notice, filing, service, and assignment steps due?
- Proof: What records support the alleged obligation, breach, and requested remedy?
For business litigation in Suffolk County, these answers provide a defensible starting point and help identify procedural mistakes before they become harder to correct.
21 Oct, 2026
